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Vehicular Ad Hoc Networks (VANETs) require mechanisms to authenticate messages, identify valid vehicles, and remove misbehaving vehicles. A Public Key Infrastructure (PKI) can be utilized to provide these functionalities using digital certificates. However, if a vehicle is no longer trusted, its certificates have to be immediately revoked and this status information has to be made available to other vehicles as soon as possible. The goal of this chapter is to introduce and describe in detail a certificate revocation mechanism based on the Merkle Hash Tree (MHT), which allows to efficiently distribute certificate revocation information in VANETs. For this, an extended-CRL is created by embedding a hash tree in each standard certificate revocation list (CRL). A node possessing an extended-CRL can respond to certificate status requests without having to send the complete CRL. Instead, the node can send a short response (less than 1 KB) that fits in a single UDP message. This means that any node possessing an extended-CRL, including Road Side Units (RSUs) or intermediate vehicles, can produce short certificate-status responses that can be easily authenticated. The main procedures involved in the proposed mechanism are described in detail. General security issues related to the mechanism are treated as well.

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Titel:	MHT-based mechanism for certificate revocation in VANETs
Link:	View this record from OAIster (Volltext) http://creativecommons.org/licenses/by-nc-nd/3.0/es
Veröffentlichung:	2014
Medientyp:	Elektronische Ressource
Schlagwort:	Index Terms: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Protocols de comunicació Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors Vehicular ad hoc networks (Computer networks) Intelligent Transportation Systems PKI Certificate revocation Extended-CRL MHT VANETs Sistemes de transport intel·ligent Ordinadors, Xarxes d' -- Mesures de seguretat Part of book or chapter of book
Sonstiges:	Nachgewiesen in: OAIster Added Details: Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica ; Universitat Politècnica de Catalunya. SERTEL - Serveis Telemàtics ; Muñoz Tapia, José Luis ; Esparza Martín, Óscar ; Hernández Gañán, Carlos ; Mata Diaz, Jorge ; Alins Delgado, Juan José ; Ganchev, Ivan Document Type: Electronic Resource Availability: Open access content. Open access content ; Attribution-NonCommercial-NoDerivs 3.0 Spain ; Restricted access - publisher's policy Note: 19 p. ; application/pdf ; English Contributing Source: UNIV POLITECNICA DE CATALUNYA ; From OAIster®, provided by the OCLC Cooperative.

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MHT-based mechanism for certificate revocation in VANETs